EM-BAC-MOD-01

Expansion module to supplement an EASYLAB base component (controller TCU3 or adapter module TAM) with a BACnet or Modbus interface to link rooms or individual volume flow controllers to the central BMS.

The expansion module includes an interface for EIA-485 networks that can be used for BACnet MS/TP or Modbus RTU (switching), a switch to enter communication parameters, a connection to update the firmware, and indicator lights.

Special characteristics

• Ready for installation, can be easily connected to the main PCB
• Interface for EIA-485 networks BACnet MS/TP and Modbus RTU
• BACnet Protocol Revision 12.0
• Only standard BACnet objects or Modbus registers are used for communication
• Data interface for an EASYLAB controller or for an EASYLAB room with different functional profiles
• Hardware switch to enter network addresses and communication parameters (no communication software required)

Technical data

• Communication interface: EIA-485 standard
• Protokoll: BACnet MS/TP standard rev. 12 or Modbus RTU
• Data transmission speeds: BACnet: 9600, 19200, 38400, 76800 baud, Modbus: 9600, 19200, 38400, 57600 baud
• Parity checks for data security: none, odd, even
• Configurable network addresses: 01 … 99
• Operating temperature: 0 to 50 °C
• IEC protection class: III (protective extra-low voltage)
• Protection level: IP 20
• EC conformity: EMC to 2004/108/EG

Data points for a single controller

• Volume flow actual and setpoint values
• Damper blade position
• Operating mode
• Alarm/status messages
• Total supply air and total extract air actual values (room)
• Evaluated damper blade positions for all controllers in a room
• Number of controllers
• Integration of volume flows

Additional data points for a fume cupboard controller

• Operating mode default setting for the fume cupboard controller equipped with the expansion module
• Selection of priority for operating mode default setting
• Face velocity actual value and setpoint value (only for fume cupboard controllers with face velocity transducer, equipment function FH-VS)

Data points for EASYLAB room

• Operating mode default setting for the room: Just one data point is required to set the default operating mode for all controllers in a room
• Selection of priority for operating mode default setting (central BMS or room)
• Room operating mode
• Volume flow rate setpoint change (by the central BMS, for example) for an external temperature or differential pressure control
• Setpoint value switching for differential pressure control: Switching between two differential pressure setpoint values
• Total supply air and total extract air actual values (room)
• Evaluated damper blade positions for all controllers in a room
• Room differential pressure actual and setpoint values
• Room pressure alarm
• Number of controllers within the EASYLAB system
• Integration of volume flows
• Status of the digital inputs and outputs
• Configurable consolidated alarm (operating statuses, hardware faults)